Chosen Solution

Just a few days ago, the screen on my 13” Retina MBP went black, except for the menu bar at the top. Mind you the bottom part of that is a little fuzzy. HDMI is still working.  What is broken, the vcu, the screen, a lose contact ? Thank you and greetings from Belgium

it seems I no longer can see the menu bar either

Instantly after start

A little later

a little after starting in Target disk mode

Not good ;-{ To be sure you’ll want to try an external monitor via the Thunderbolt port. But I fear your logic board is toast! And I also think your display is bad as well! Did you get your system wet at some point?